RESUMO
Routine diagnostic methods for allergies to plant-derived foods are based on skin prick test (SPT) with commercial extracts, prick-by-prick (PbP) with fresh food, serum-specific IgE measurement, and oral food challenge.We discuss the possibility and the advantages of performing, in patients with oral allergy syndrome (OAS) by fruit and vegetables (excluding nuts) PR-10 allergy, component-resolved diagnosis (CRD) by SPT and PbP with raw and cooked vegetables, rather than performing a CRD with in vitro tests by drawing blood.Based on our clinical experience and the studies published in the literature, we believe that, at least for the OAS by fruit and vegetables (excluding nuts) PR-10 allergy, the search for sensitizing allergens and related cross-reactive allergens with SPT and PbP can be performed routinely in clinical practice, even at the primary-care level.
Assuntos
Alérgenos/efeitos adversos , Hipersensibilidade Alimentar/diagnóstico , Frutas/efeitos adversos , Proteínas de Vegetais Comestíveis/efeitos adversos , Verduras/efeitos adversos , Alérgenos/administração & dosagem , Alérgenos/imunologia , Criança , Reações Cruzadas , Feminino , Hipersensibilidade Alimentar/imunologia , Frutas/imunologia , Humanos , Proteínas de Vegetais Comestíveis/administração & dosagem , Proteínas de Vegetais Comestíveis/imunologia , Testes Cutâneos , Verduras/imunologiaRESUMO
PURPOSE OF REVIEW: The route of allergen sensing via the skin appears to influence the immune system towards mounting a type 2 response, especially in genetically predisposed individuals. Allergens recognized this way may derive from microbial, animal, food, or other plant sources and trigger atopic dermatitis. Allergens can be grouped into families depending on their structure and function, harboring significant structural and sequence similarities. Cross-reactivity between allergens is believed to arise as a consequence, and to underlie the development of further atopic diseases. RECENT FINDINGS: Especially for the plant allergens of the families of PR10-related proteins and profilins, immune cross-reactions have been described. Actual studies support that food and pollen allergens can aggravate skin lesions in patients suffering from atopic dermatitis. Further on, allergens derived from air-borne or skin-borne fungi belong to common allergen families and bear cross-reactivity potential. Cross-reactivity to human homologous proteins, so-called autoallergens, is discussed to contribute to the chronification of atopic dermatitis. SUMMARY: Due to high evolutionary conservation, allergic reactions can be triggered by highly homologous members of allergen families on the humoral as well as on the cellular level.
Assuntos
Alérgenos/imunologia , Dermatite Atópica/imunologia , Hipersensibilidade Alimentar/imunologia , Pele/imunologia , Alérgenos/efeitos adversos , Antígenos de Fungos/imunologia , Antígenos de Plantas/efeitos adversos , Antígenos de Plantas/imunologia , Aspergillus/imunologia , Doença Crônica , Reações Cruzadas , Dermatite Atópica/complicações , Dermatite Atópica/genética , Dermatite Atópica/microbiologia , Hipersensibilidade Alimentar/genética , Proteínas Fúngicas/imunologia , Predisposição Genética para Doença , Humanos , Imunoglobulina E/imunologia , Malassezia/imunologia , Proteínas de Vegetais Comestíveis/efeitos adversos , Proteínas de Vegetais Comestíveis/imunologia , Pólen/efeitos adversos , Pólen/imunologia , Profilinas/efeitos adversos , Profilinas/imunologia , Fatores de Risco , Pele/microbiologia , Pele/patologiaRESUMO
The addition of soy proteins, currently classified as a food allergen, into meat products is a commonly used practice due to its functional properties and low cost. Its addition to meat products can cause health problems for individuals allergic to these proteins. Allergic individuals can be affected by the ingestion of low amounts of the allergen. In Brazil, limits are set for the addition of soy proteins in meat products in order to avoide fraud. Starting in 2015 reporting the name of the added component became mandatory for all food labelling. Some studies have reported that food processing can reduce the allergenicity, either by irreversible removal of allergens or by modifying the allergen structure. However, the technological approach to decrease allergenicity has largely been empirical. This review describes the use of soy protein in meat products and the health risk for allergic individuals and consumers of these products. Finally, appropriate methodologies for the detection and quantification of these proteins must be further explored and established to avoid fraud and to preserve consumer health.
La adición de proteínas de soya, actualmente clasificadas como alergeno alimentario, en los productos cárnicos es una práctica comúnmente utilizada debido a sus propiedades funcionales y bajo costo. Su adición en productos cárnicos puede causar problemas de salud en personas alérgicas a estas proteínas. Las personas alérgicas pueden verse afectadas por la ingestión de cantidades diminutas de alérgeno. En Brasil, se establecen límites para la adición de proteínas de soya en los productos cárnicos con el objetivo de evitar el fraude. Solo en 2015 se hizo obligatoria la declaración en la etiqueta de todos los alimentos que indicaban la presencia de sustancias alérgicas, así como el nombre del componente. Algunos estudios se refieren al procesamiento de alimentos para reducir la alergenicidad, ya sea mediante la eliminación irreversible de alergenos o modificando la estructura del alergeno; sin embargo, el enfoque tecnológico hasta ahora para disminuir la alergenicidad ha sido en gran medida empírico. Esta revisión describe el uso de proteína de soya en los productos cárnicos y el riesgo que puede causar para la salud de las personas alérgicas y a los consumidores de estos productos. Finalmente, las metodologías apropiadas para la detección y cuantificación de estas proteínas deben explorarse en profundidad y establecerse para evitar el fraude y preservar la salud de los consumidores.
Assuntos
Humanos , Proteínas de Vegetais Comestíveis/efeitos adversos , Proteínas de Soja/efeitos adversos , Hipersensibilidade Alimentar/etiologia , Produtos da Carne , Alérgenos , Risco à Saúde Humana , Hipersensibilidade Alimentar/prevenção & controle , EpitoposRESUMO
Plant lipid transfer proteins (LTPs) are widespread plant food allergens, highly resistant to food processing and to the gastrointestinal environment, which have been described as the most common food allergens in the Mediterranean area. LTP allergy is widely described in adults, but it represents an emerging allergen also in the pediatric population. Little is known about the real prevalence and the clinical features of this allergy in children and it still often remains underdiagnosed in these patients. An early identification and a deeper knowledge of this allergy in childhood can avoid severe systemic reactions and improve the child's quality of life. Pediatricians should always consider the possibility of LTP involvement in cases of plant-derived food allergy.
Assuntos
Alérgenos/efeitos adversos , Anafilaxia/imunologia , Antígenos de Plantas/efeitos adversos , Proteínas de Transporte/efeitos adversos , Hipersensibilidade Alimentar/diagnóstico , Proteínas de Vegetais Comestíveis/efeitos adversos , Proteínas de Plantas/efeitos adversos , Alérgenos/imunologia , Anafilaxia/tratamento farmacológico , Antígenos de Plantas/imunologia , Proteínas de Transporte/imunologia , Criança , Reações Cruzadas , Hipersensibilidade Alimentar/complicações , Hipersensibilidade Alimentar/dietoterapia , Hipersensibilidade Alimentar/imunologia , Humanos , Imunoglobulina E/imunologia , Educação de Pacientes como Assunto , Proteínas de Plantas/imunologia , Proteínas de Vegetais Comestíveis/imunologia , Pólen/efeitos adversos , Pólen/imunologia , Qualidade de Vida , Índice de Gravidade de DoençaRESUMO
BACKGROUND AND AIMS: Plant-based protein intake is associated with all-cause and/or cardiovascular disease (CVD) mortality in general population, but such data are scarce in dialysis patients. Thus, we examined the associations of plant-based protein-total protein ratio with all-cause and CVD mortality in patients on peritoneal dialysis (PD). METHODS AND RESULTS: The study enrolled 884 incident patients who started PD between October 2002 and August 2014. All demographic and laboratory data were recorded at baseline. Repeated measurements for laboratory and nutrition parameters were recorded at regular intervals and thus calculated as time-averaged values. Multivariable Cox regression models were used to estimate the hazard ratio (HR) of plant-based protein-total protein ratio and mortality based on baseline and time-averaged covariates, respectively. There were 437 (49%) patients died during a mean follow-up period of 45 months, of which 178 (40.8%) were due to CVD. Each 10% in increase in time-averaged plant-based protein-total protein ratio was associated with a reduction of 71% (95% CI, 90%-14%) and 89% (95% CI, 98%-29%) for all-cause and CVD mortality, respectively. Based on examination on interactive effects, we further found both baseline and time-averaged plant-based protein-total protein ratio were inversely associated with all-cause and CVD mortality in the subgroups of female, age ≥60 years, and albumin >35 g/L. CONCLUSIONS: The present study suggested that a diet with a higher plant-based protein-total protein ratio is associated with lower all-cause and CVD mortality in PD patients, and is more significant in female and elderly patients, and those without hypoalbuminemia.
Assuntos
Doenças Cardiovasculares/mortalidade , Falência Renal Crônica/terapia , Diálise Peritoneal/mortalidade , Proteínas de Vegetais Comestíveis/administração & dosagem , Adulto , Fatores Etários , Idoso , Pequim/epidemiologia , Doenças Cardiovasculares/diagnóstico , Doenças Cardiovasculares/prevenção & controle , Causas de Morte , Comorbidade , Feminino , Humanos , Hipoalbuminemia/mortalidade , Falência Renal Crônica/diagnóstico , Falência Renal Crônica/mortalidade , Masculino , Pessoa de Meia-Idade , Estado Nutricional , Diálise Peritoneal/efeitos adversos , Proteínas de Vegetais Comestíveis/efeitos adversos , Fatores de Proteção , Estudos Retrospectivos , Medição de Risco , Fatores de Risco , Fatores Sexuais , Fatores de Tempo , Resultado do TratamentoRESUMO
BACKGROUND & AIMS: Wheat has become the world's major staple and its consumption correlates with prevalence of noncommunicable disorders such as inflammatory bowel diseases. Amylase trypsin inhibitors (ATIs), a component of wheat, activate the intestine's innate immune response via toll-like receptor 4 (TLR4). We investigated the effects of wheat and ATIs on severity of colitis and fecal microbiota in mice. METHODS: C57BL/6 wild-type and Tlr4-/- mice were fed wheat- or ATI-containing diets or a wheat-free (control) diet and then given dextran sodium sulfate to induce colitis; we also studied Il10-/- mice, which develop spontaneous colitis. Changes in fecal bacteria were assessed by taxa-specific quantitative polymerase chain reaction and 16S ribosomal RNA metagenomic sequencing. Feces were collected from mice on wheat-containing, ATI-containing, control diets and transplanted to intestines of mice with and without colitis on control or on ATI-containing diets. Intestinal tissues were collected and analyzed by histology, immunohistochemistry, and flow cytometry. Bacteria with reported immunomodulatory effects were incubated with ATIs and analyzed in radial diffusion assays. RESULTS: The wheat- or ATI-containing diets equally increased inflammation in intestinal tissues of C57BL/6 mice with colitis, compared with mice on control diets. The ATI-containing diet promoted expansion of taxa associated with development of colitis comparable to the wheat-containing diet. ATIs inhibited proliferation of specific human commensal bacteria in radial diffusion assays. Transplantation of microbiota from feces of mice fed the wheat- or ATI-containing diets to intestines of mice on control diets increased the severity of colitis in these mice. The ATI-containing diet did not increase the severity of colitis in Tlr4-/- mice. CONCLUSIONS: Consumption of wheat or wheat ATIs increases intestinal inflammation in mice with colitis, via TLR4, and alters their fecal microbiota. Wheat-based, ATI-containing diets therefore activate TLR4 signaling and promote intestinal dysbiosis.
Assuntos
Colite/imunologia , Disbiose/imunologia , Doenças Inflamatórias Intestinais/imunologia , Proteínas de Vegetais Comestíveis/efeitos adversos , Triticum/imunologia , Ração Animal/efeitos adversos , Animais , Colite/induzido quimicamente , Colite/diagnóstico , Colite/microbiologia , Sulfato de Dextrana/toxicidade , Modelos Animais de Doenças , Disbiose/complicações , Disbiose/diagnóstico , Disbiose/microbiologia , Transplante de Microbiota Fecal , Fezes/microbiologia , Microbioma Gastrointestinal/imunologia , Humanos , Imunidade Inata , Doenças Inflamatórias Intestinais/induzido quimicamente , Doenças Inflamatórias Intestinais/diagnóstico , Doenças Inflamatórias Intestinais/microbiologia , Masculino , Camundongos , Camundongos Knockout , Proteínas de Vegetais Comestíveis/imunologia , Índice de Gravidade de Doença , Transdução de Sinais/genética , Transdução de Sinais/imunologia , Receptor 4 Toll-Like/genética , Receptor 4 Toll-Like/metabolismo , Inibidores da Tripsina/efeitos adversos , Inibidores da Tripsina/imunologiaRESUMO
OBJECTIVE: To observe the expression patterns of salivary mRNA 21 in different stages and grades of OSMF and also in habitual areca nut chewers without OSMF. SUBJECTS AND METHODS: The study consisted of a total of 185 samples, where 61 patients had chewing habits (chewing gutkha and other forms of areca nut) and had OSMF (Group 1). 61 patients had chewing habits but did not have OSMF (Group 2), and 63 were normal healthy patients (control group) without any chewing habits (Group 3). Unstimulated saliva samples were collected from patients following the standard operating procedures. miRNA 21 was isolated and purified from saliva samples using the miRNeasy Mini Kit, Qiagen. The primers for miRNA relative quantification analysis were designed using the Primer Express software of Applied Biosystems. Quantification of all the samples was carried out using SYBR chemistry in an Applied Biosystems Real-Time PCR. RESULTS: There was no statistically significant difference between the demographic characteristics of patients. There was a statistically significant difference between the expressions of miRNA 21 amongst the three groups noted in Kruskal Wallis test. (<0.001*) A post hoc test was perfomed to confirm the statistical difference between patients within all three groups. There was no statistically significant difference noted between the OSMF group and patients with chewing habits group (G1 vs. G2 p: 0.10), but there was a significant difference when compared with normal patients. (G1 vs. G3 p: <0.001*) and (G2 vs. G3 <0.001*). CONCLUSION: This study concludes that miRNA 21 is overexpressed in OSMF and chewing habit patients. But the expression levels were not significantly associated with the severity of the disease process. A long term and large scale studies are required to assess its application as a diagnostic profibrotic marker in OSMF.
Assuntos
Areca/química , MicroRNAs/genética , Fibrose Oral Submucosa/induzido quimicamente , Fibrose Oral Submucosa/genética , Saliva/metabolismo , Expressão Gênica/genética , Humanos , Mastigação , Proteínas de Vegetais Comestíveis/efeitos adversosRESUMO
Wheat gluten can be chemically or enzymatically hydrolysed to produce functional ingredients useful in food and cosmetics. However severe allergies to hydrolysed wheat proteins (HWP) have been described in Europe and Japan since the early 2000's. Triggering proteins and IgE epitopes were described both for French and Japanese cohorts and appeared remarkably similar leading to define a new wheat allergic entity. Deamidation induced by functionalisation generate neo-allergens responsible for this particular allergy. This article aims to review the processes leading to deamidation and the clinical features of the patients suffering from this allergy. Then the molecular determinants involved in HWP-allergy were exhaustively described and hypothesis regarding the sensitizing mechanism of HWP-allergy are discussed. Finally, current regulation and tools aiming at managing this risk associated with HWP are presented.
Assuntos
Alérgenos , Glutens/efeitos adversos , Proteínas de Vegetais Comestíveis/efeitos adversos , Hidrolisados de Proteína/efeitos adversos , Hipersensibilidade a Trigo , Humanos , Imunoglobulina E , Estrutura Molecular , Triticum/químicaRESUMO
The relationship between dietary protein consumption and the risk of type 2 diabetes (T2D) has been inconsistent. The aim of this meta-analysis was to explore the relations between dietary protein consumption and the risk of T2D. We conducted systematic retrieval of prospective studies in PubMed, Embase, and Web of Science. Summary relative risks were compiled with a fixed effects model or a random effects model, and a restricted cubic spline regression model and generalized least squares analysis were used to evaluate the diet-T2D incidence relationship. T2D risk increased with increasing consumption of total protein and animal protein, red meat, processed meat, milk, and eggs, respectively, while plant protein and yogurt had an inverse relationship. A non-linear association with the risk for T2D was found for the consumption of plant protein, processed meat, milk, yogurt, and soy. This meta-analysis suggests that substitution of plant protein and yogurt for animal protein, especially red meat and processed meat, can reduce the risk for T2D.
Assuntos
Proteínas Animais da Dieta/efeitos adversos , Diabetes Mellitus Tipo 2/epidemiologia , Diabetes Mellitus Tipo 2/etiologia , Dieta/efeitos adversos , Dieta/métodos , Humanos , Incidência , Carne/efeitos adversos , Proteínas de Vegetais Comestíveis/efeitos adversos , Estudos Prospectivos , Fatores de RiscoRESUMO
BACKGROUND: Peanut allergy is a generally persistent, sometimes life-threatening food allergy. With no treatments demonstrating the ability to cure a food allergy, the focus of drugs in development has been on providing a level of protection against accidental exposure reactions. However, no study has estimated the relative risk reduction of a food-allergic population receiving a specific immunotherapeutic treatment for their allergies. OBJECTIVE: To estimate the relative risk reduction when consuming peanut-contaminated packaged food products in a double-blind, placebo-controlled Phase 3 study population of children treated with epicutaneous immunotherapy (EPIT) for 12 months with either a patch containing 250 µg peanut protein (250-µg patch) or a placebo patch. METHODS: The probability of an allergic reaction due to the unintended presence of peanut protein in packaged food products was modeled per study group and food category combination using Monte Carlo simulations. Risks per eating occasion of a contaminated packaged food product and the number of individuals per study population predicted to react on a yearly basis were investigated. RESULTS: The population treated with the 250-µg patch demonstrated a significantly increased dose-response distribution after 12 months of treatment, which resulted in a relative risk reduction of 73.2% to 78.4% when consuming peanut-contaminated packaged food products. In contrast, no statistically significant change was observed for the placebo group at the 12-month point. CONCLUSION: Our study estimates a substantial relative risk reduction for allergic reactions among peanut-allergic children after 12 months of EPIT with the 250-µg patch, supporting the potential real-world clinical relevance of this investigational immunotherapy and its possible role as a future therapy for peanut-allergic children. ClinicalTrials.gov Identifier: NCT02636699.
Assuntos
Alérgenos/administração & dosagem , Antígenos de Plantas/administração & dosagem , Arachis , Dessensibilização Imunológica , Hipersensibilidade a Amendoim/terapia , Proteínas de Vegetais Comestíveis/administração & dosagem , Administração Cutânea , Alérgenos/efeitos adversos , Antígenos de Plantas/efeitos adversos , Arachis/efeitos adversos , Criança , Pré-Escolar , Método Duplo-Cego , Contaminação de Alimentos , Humanos , Proteínas de Vegetais Comestíveis/efeitos adversos , Comportamento de Redução do RiscoRESUMO
BACKGROUND: Previous studies investigating protein intake in relation to mortality have provided conflicting results. OBJECTIVE: We investigated the associations of dietary protein and protein sources with risk of disease death in the prospective, population-based Kuopio Ischaemic Heart Disease Risk Factor Study. METHODS: The study population consisted of 2641 Finnish men, aged 42-60 y at baseline in 1984-1989. We estimated protein intakes with 4-d dietary records at baseline and collected data on disease deaths from the national Causes of Death Register. Cox proportional hazards regression models were used to estimate HRs and 95% CIs. RESULTS: During the average follow-up of 22.3 y, we observed 1225 deaths due to disease. Higher intakes of total protein and animal protein had borderline statistically significant associations with increased mortality risk: multivariable-adjusted HR (95% CI) in the highest compared with the lowest quartile for total protein intake = 1.17 (0.99, 1.39; P-trend across quartiles = 0.07) and for animal protein intake = 1.13 (0.95, 1.35; P-trend = 0.04). Higher animal-to-plant protein ratio (extreme-quartile HR = 1.23; 95% CI: 1.02, 1.49; P-trend = 0.01) and higher meat intake (extreme-quartile HR = 1.23; 95% CI: 1.04, 1.47; P-trend = 0.01) were associated with increased mortality. When evaluated based on disease history at baseline, the association of total protein with mortality appeared more evident among those with a history of type 2 diabetes, cardiovascular disease, or cancer (n = 1094) compared with those without disease history (n = 1547) (P-interaction = 0.05 or 0.07, depending on the model). Intakes of fish, eggs, dairy, or plant protein sources were not associated with mortality. CONCLUSIONS: Higher ratio of animal to plant protein in diet and higher meat intake were associated with increased mortality risk. Higher total protein intake appeared to be associated with mortality mainly among those with a predisposing disease. This trial was registered at clinicaltrials.gov as NCT03221127.
Assuntos
Causas de Morte , Proteínas Alimentares/efeitos adversos , Ingestão de Energia , Comportamento Alimentar , Carne/efeitos adversos , Adulto , Proteínas Animais da Dieta/administração & dosagem , Proteínas Animais da Dieta/efeitos adversos , Doenças Cardiovasculares/mortalidade , Diabetes Mellitus Tipo 2/mortalidade , Dieta , Proteínas Alimentares/administração & dosagem , Finlândia/epidemiologia , Humanos , Masculino , Pessoa de Meia-Idade , Isquemia Miocárdica/mortalidade , Neoplasias/mortalidade , Proteínas de Vegetais Comestíveis/administração & dosagem , Proteínas de Vegetais Comestíveis/efeitos adversos , Modelos de Riscos Proporcionais , Estudos Prospectivos , Fatores de RiscoRESUMO
The effects of low marine ingredient diets supplemented with graded levels (L1, L2, L3) of a micronutrient package (NP) on growth and metabolic responses were studied in diploid and triploid salmon parr. Diploids fed L2 showed significantly improved growth and reduced liver, hepatic steatosis, and viscerosomatic indices, while fish fed L3 showed suppressed growth rate 14â¯weeks post feeding. In contrast, dietary NP level had no effect on triploid performance. Whole body mineral composition, with exception of copper, did not differ between diet or ploidy. Whole fish total AAs and N-metabolites showed no variation by diet or ploidy. Free circulating AAs and white muscle N-metabolites were higher in triploids than diploids, while branch-chained amino acids were higher in diploids than triploids. Diploids had higher whole body α-tocopherol and hepatic vitamins K1 and K2 than triploids. Increased tissue B-vitamins for niacin and whole-body folate with dietary NP supplementation were observed in diploids but not triploids, while whole body riboflavin was higher in diploids than triploids. Hepatic transcriptome profiles showed that diploids fed diet L2 was more similar to that observed in triploids fed diet L3. In particular, sterol biosynthesis pathways were down-regulated, whereas cytochrome P450 metabolism was up-regulated. Onecarbon metabolism was also affected by increasing levels of supplementation in both ploidies. Collectively, results suggested that, for optimised growth and liver function, micronutrient levels be supplemented above current National Research Council (2011) recommendations for Atlantic salmon when fed low marine ingredient diets. The study also suggested differences in nutritional requirements between ploidy.
Assuntos
Dieta/veterinária , Diploide , Fígado/metabolismo , Micronutrientes/administração & dosagem , Salmo salar/crescimento & desenvolvimento , Salmo salar/genética , Triploidia , Animais , Animais Geneticamente Modificados/crescimento & desenvolvimento , Animais Geneticamente Modificados/fisiologia , Aquicultura/economia , Redução de Custos , Dieta/efeitos adversos , Dieta/economia , Óleos de Peixe/administração & dosagem , Óleos de Peixe/química , Óleos de Peixe/economia , Produtos Pesqueiros/análise , Produtos Pesqueiros/economia , Proteínas de Peixes/análise , Proteínas de Peixes/genética , Proteínas de Peixes/metabolismo , Regulação da Expressão Gênica no Desenvolvimento , Humanos , Fígado/citologia , Fígado/crescimento & desenvolvimento , Micronutrientes/análise , Músculo Esquelético/química , Músculo Esquelético/crescimento & desenvolvimento , Músculo Esquelético/metabolismo , Necessidades Nutricionais , Valor Nutritivo , Óleos de Plantas/administração & dosagem , Óleos de Plantas/efeitos adversos , Óleos de Plantas/química , Óleos de Plantas/economia , Proteínas de Vegetais Comestíveis/administração & dosagem , Proteínas de Vegetais Comestíveis/efeitos adversos , Proteínas de Vegetais Comestíveis/análise , Proteínas de Vegetais Comestíveis/economia , Salmo salar/fisiologia , Escócia , Alimentos Marinhos/análise , Aumento de PesoRESUMO
Sesame is an important oilseed crop, which has been used as a traditional health food to ameliorate the prevention of various diseases. We evaluated the changes in the anti-allergic activities of sesame by bioconversion. SDS-PAGE of non-fermented sesame proteins showed major allergen bands, while that of fermented sesame showed only a few protein bands. Additionally, we investigated the effectiveness of fermented sesame by bioconversion in tumor necrosis factor-α (TNF-α)- and interferon-γ (IFN-γ)-induced HaCaT cells. In HaCaT cells, fermented sesame inhibited the mRNA expression of interleukin-6 (IL-6) and interleukin-1ß (IL-1ß), thymus and macrophage-derived chemokine (MDC/CCL22), activation-regulated chemokine (TARC/CCL17), and intercellular adhesion molecule-1 (ICAM-1). Moreover, fermented sesame inhibited the activation of nuclear factor-κB (NF-κB) and signal transducer and activator of transcription 1 (STAT1). Fermented sesame exerts anti-allergic effects by suppressing the expression of chemokines and cytokines via blockade of NF-κB and STAT1 activation.
Assuntos
Alérgenos/efeitos adversos , Citocinas/antagonistas & inibidores , Alimentos Fermentados/análise , Queratinócitos/metabolismo , Proteínas de Vegetais Comestíveis/efeitos adversos , Sementes/química , Sesamum/química , Agaricales , Alérgenos/análise , Alérgenos/metabolismo , Linhagem Celular , Quimiocinas/antagonistas & inibidores , Quimiocinas/genética , Quimiocinas/metabolismo , Produtos Agrícolas/efeitos adversos , Produtos Agrícolas/química , Produtos Agrícolas/crescimento & desenvolvimento , Produtos Agrícolas/microbiologia , Citocinas/genética , Citocinas/metabolismo , Dermatite Atópica/etiologia , Dermatite Atópica/imunologia , Dermatite Atópica/prevenção & controle , Fermentação , Alimentos Fermentados/efeitos adversos , Alimentos Fermentados/microbiologia , Manipulação de Alimentos , Hipersensibilidade Alimentar/etiologia , Hipersensibilidade Alimentar/imunologia , Hipersensibilidade Alimentar/prevenção & controle , Carpóforos , Regulação Neoplásica da Expressão Gênica , Humanos , Queratinócitos/imunologia , Proteínas de Vegetais Comestíveis/análise , Proteínas de Vegetais Comestíveis/metabolismo , República da Coreia , Sementes/efeitos adversos , Sementes/crescimento & desenvolvimento , Sementes/microbiologia , Sesamum/efeitos adversos , Sesamum/crescimento & desenvolvimento , Sesamum/microbiologia , Cogumelos Shiitake/isolamento & purificação , Cogumelos Shiitake/metabolismoAssuntos
Glicina , Cardiopatias/prevenção & controle , Proteínas de Vegetais Comestíveis/genética , Plantas Geneticamente Modificadas , Valina , Glicina/efeitos adversos , Cardiopatias/diagnóstico , Cardiopatias/epidemiologia , Humanos , Ligação de Hidrogênio , Proteínas de Vegetais Comestíveis/efeitos adversos , Plantas Geneticamente Modificadas/efeitos adversos , Medição de Risco , Fatores de Risco , Valina/efeitos adversosRESUMO
Finding suitable alternative protein sources for diets of carnivorous fish species remains a major concern for sustainable aquaculture. Through genetic selection, we created a strain of rainbow trout that outperforms parental lines in utilizing an all-plant protein diet and does not develop enteritis in the distal intestine, as is typical with salmonids on long-term plant protein-based feeds. By incorporating this strain into functional analyses, we set out to determine which genes are critical to plant protein utilization in the absence of gut inflammation. After a 12-week feeding trial with our selected strain and a control trout strain fed either a fishmeal-based diet or an all-plant protein diet, high-throughput RNA sequencing was completed on both liver and muscle tissues. Differential gene expression analyses, weighted correlation network analyses and further functional characterization were performed. A strain-by-diet design revealed differential expression ranging from a few dozen to over one thousand genes among the various comparisons and tissues. Major gene ontology groups identified between comparisons included those encompassing central, intermediary and foreign molecule metabolism, associated biosynthetic pathways as well as immunity. A systems approach indicated that genes involved in purine metabolism were highly perturbed. Systems analysis among the tissues tested further suggests the interplay between selection for growth, dietary utilization and protein tolerance may also have implications for nonspecific immunity. By combining data from differential gene expression and co-expression networks using selected trout, along with ontology and pathway analyses, a set of 63 candidate genes for plant diet tolerance was found. Risk loci in human inflammatory bowel diseases were also found in our datasets, indicating rainbow trout selected for plant-diet tolerance may have added utility as a potential biomedical model.
Assuntos
Ração Animal/análise , Fenômenos Fisiológicos da Nutrição Animal , Aquicultura/métodos , Dieta , Enterite/etiologia , Oncorhynchus mykiss/fisiologia , Proteínas de Vegetais Comestíveis/efeitos adversos , Animais , Carnivoridade , Sequenciamento de Nucleotídeos em Larga Escala , NutrigenômicaRESUMO
AIM: To compare high animal protein (AP) with high plant protein (PP) diets, differing in amino acid composition, in people with type 2 diabetes (T2DM). MATERIALS AND METHODS: We compared isocaloric diets containing 30% of energy either as AP or PP, using newly developed PP-enriched foods, both combined with 30% energy as fat and 40% as carbohydrates in 44 patients with T2DM over 6 weeks in a randomized parallel-group study. Insulin sensitivity was assessed by hyperinsulinaemic-euglycaemic clamps and cardiovascular variables were measured. RESULTS: Uric acid decreased in both groups, but significantly more in the AP than the PP group. There were no significant differences in other variables, although glycated haemoglobin levels, diastolic blood pressure and fasting non-esterified fatty acid levels improved significantly in the PP but not in the AP group. Insulin sensitivity (M-value), C-reactive protein and fasting glucose improved significantly in the AP but not in the PP group. Total and LDL cholesterol levels and systolic blood pressure decreased significantly in both groups, and the urinary albumin excretion rate decreased from baseline in participants with microalbuminuria. CONCLUSIONS: Isocaloric diets high in AP or PP allow similar improvements in metabolism and cardiovascular risk factors in people with T2DM, indicating that the differences in amino acid composition do not affect the metabolic responses to the interventions.
Assuntos
Doenças Cardiovasculares/prevenção & controle , Diabetes Mellitus Tipo 2/dietoterapia , Angiopatias Diabéticas/prevenção & controle , Cardiomiopatias Diabéticas/prevenção & controle , Dieta para Diabéticos/métodos , Resistência à Insulina , Proteínas de Vegetais Comestíveis/administração & dosagem , Idoso , Biomarcadores/sangue , Proteína C-Reativa/análise , Doenças Cardiovasculares/complicações , Doenças Cardiovasculares/epidemiologia , Estudos de Coortes , Laticínios/efeitos adversos , Diabetes Mellitus Tipo 2/sangue , Diabetes Mellitus Tipo 2/complicações , Diabetes Mellitus Tipo 2/metabolismo , Angiopatias Diabéticas/epidemiologia , Cardiomiopatias Diabéticas/epidemiologia , Feminino , Alemanha/epidemiologia , Humanos , Hipercolesterolemia/complicações , Hipercolesterolemia/epidemiologia , Hipercolesterolemia/prevenção & controle , Hiperglicemia/prevenção & controle , Masculino , Carne/efeitos adversos , Pessoa de Meia-Idade , Proteínas de Vegetais Comestíveis/efeitos adversos , Fatores de Risco , Ácido Úrico/sangueRESUMO
OBJECTIVE: The aim of this study was to assess the association between protein and arginine from meat intake and oxidative stress in a general population. METHODS: Data came from the Health Survey for Sao Paulo (ISA-Capital), a cross-sectional population-based study in Brazil (N = 549 adults). Food intake was estimated by a 24-h dietary recall. Oxidative stress was estimated by malondialdehyde (MDA) concentration in plasma. Analyses were performed using general linear regression models adjusted for some genetic, lifestyle, and biochemical confounders. RESULTS: MDA levels were associated with meat intake (P for linear trend = 0.031), protein from meat (P for linear trend = 0.006), and arginine from meat (P for linear trend = 0.044) after adjustments for confounders: age, sex, body mass index, smoking, physical activity, intake of fruit and vegetables, energy and heterocyclic amines, C-reactive protein levels, and polymorphisms in GSTM1 (glutathione S-transferase Mu 1) and GSTT1 (glutathione S-transferase theta 1) genes. Results were not significant for total protein and protein from vegetable intake (P > 0.05). CONCLUSIONS: High protein and arginine from meat intake were associated with oxidative stress independently of genetic, lifestyle, and biochemical confounders in a population-based study. Our results suggested a novel link between high protein/arginine intake and oxidative stress, which is a major cause of age-related diseases.
Assuntos
Arginina/intoxicação , Doença Crônica , Dieta/efeitos adversos , Proteínas Alimentares/efeitos adversos , Carne/efeitos adversos , Estresse Oxidativo , Saúde da População Urbana , Arginina/metabolismo , Biomarcadores/sangue , Brasil/epidemiologia , Proteína C-Reativa/análise , Doença Crônica/epidemiologia , Doença Crônica/etnologia , Fatores de Confusão Epidemiológicos , Estudos Transversais , Dieta/etnologia , Proteínas Alimentares/administração & dosagem , Proteínas Alimentares/metabolismo , Humanos , Malondialdeído/sangue , Inquéritos Nutricionais , Proteínas de Vegetais Comestíveis/administração & dosagem , Proteínas de Vegetais Comestíveis/efeitos adversos , Proteínas de Vegetais Comestíveis/metabolismo , Saúde da População Urbana/etnologiaAssuntos
Anafilaxia/imunologia , Hipersensibilidade Alimentar/imunologia , Proteínas de Vegetais Comestíveis/efeitos adversos , Vicia faba/efeitos adversos , Anafilaxia/diagnóstico , Anafilaxia/tratamento farmacológico , Antialérgicos/uso terapêutico , Biomarcadores/sangue , Pré-Escolar , Culinária , Epitopos , Hipersensibilidade Alimentar/diagnóstico , Hipersensibilidade Alimentar/tratamento farmacológico , Humanos , Imunoglobulina E/sangue , Imunoglobulina E/imunologia , Testes Intradérmicos , Masculino , Proteínas de Vegetais Comestíveis/imunologia , Testes Sorológicos , Resultado do Tratamento , Vicia faba/imunologiaRESUMO
The composition of the gut microbiome reflects the overall health status of the host. In this study, stool samples representing the gut microbiomes from 6 gluten-sensitive (GS) captive juvenile rhesus macaques were compared with those from 6 healthy, age- and diet-matched peers. A total of 48 samples representing both groups were studied using V4 16S rRNA gene DNA analysis. Samples from GS macaques were further characterized based on type of diet administered: conventional monkey chow, i.e., wheat gluten-containing diet (GD), gluten-free diet (GFD), barley gluten-derived diet (BOMI) and reduced gluten barley-derived diet (RGB). It was hypothesized that the GD diet would lower the gut microbial diversity in GS macaques. This is the first report illustrating the reduction of gut microbial alpha-diversity (p < 0.05) following the consumption of dietary gluten in GS macaques. Selected bacterial families (e.g., Streptococcaceae and Lactobacillaceae) were enriched in GS macaques while Coriobacteriaceae was enriched in healthy animals. Within several weeks after the replacement of the GD by the GFD diet, the composition (beta-diversity) of gut microbiome in GS macaques started to change (p = 0.011) towards that of a normal macaque. Significance for alpha-diversity however, was not reached by the day 70 when the feeding experiment ended. Several inflammation-associated microRNAs (miR-203, -204, -23a, -23b and -29b) were upregulated (p < 0.05) in jejunum of 4 biopsied GS macaques fed GD with predicted binding sites on 16S ribosomal RNA of Lactobacillus reuteri (accession number: NR_025911), Prevotella stercorea (NR_041364) and Streptococcus luteciae (AJ297218) that were overrepresented in feces. Additionally, claudin-1, a validated tight junction protein target of miR-29b was significantly downregulated in jejunal epithelium of GS macaques. Taken together, we predict that with the introduction of effective treatments in future studies the diversity of gut microbiomes in GS macaques will approach those of healthy individuals. Further studies are needed to elucidate the regulatory pathways of inflammatory miRNAs in intestinal mucosa of GS macaques and to correlate their expression with gut dysbiosis.
Assuntos
Doença Celíaca/metabolismo , Modelos Animais de Doenças , Disbiose/metabolismo , Glutens/efeitos adversos , Mucosa Intestinal/metabolismo , MicroRNAs/metabolismo , Proteínas de Vegetais Comestíveis/efeitos adversos , Animais , Biomarcadores/metabolismo , Doença Celíaca/imunologia , Doença Celíaca/microbiologia , Doença Celíaca/patologia , Claudina-1/antagonistas & inibidores , Claudina-1/genética , Claudina-1/metabolismo , Disbiose/imunologia , Disbiose/microbiologia , Disbiose/patologia , Fezes/química , Fezes/microbiologia , Feminino , Microbioma Gastrointestinal/imunologia , Regulação da Expressão Gênica , Mucosa Intestinal/imunologia , Mucosa Intestinal/microbiologia , Mucosa Intestinal/patologia , Jejuno/imunologia , Jejuno/metabolismo , Jejuno/microbiologia , Jejuno/patologia , Macaca mulatta , Masculino , MicroRNAs/química , Motivos de Nucleotídeos , RNA Bacteriano/metabolismo , RNA Ribossômico 16S/metabolismo , Organismos Livres de Patógenos Específicos , Junções Íntimas/imunologia , Junções Íntimas/metabolismo , Junções Íntimas/patologiaRESUMO
We previously reported that rice endosperm protein (REP) has renoprotective effects in Goto-Kakizaki rats, a non-obese diabetic model. However, whether these effects occur in obese diabetes remains unclear. This study aimed to clarify the effects of REP on obese diabetes, especially on fatty liver and diabetic nephropathy, using the obese diabetic model Zucker diabetic fatty (ZDF) rats. In total, 7-week-old male ZDF rats were fed diets containing 20 % REP or casein (C) for 8 weeks. Changes in fasting blood glucose levels and urinary markers were monitored during the experimental period. Hepatic lipids and metabolites were measured and renal glomeruli were observed morphologically. HbA1c levels were significantly lower in rats fed REP, compared with C (P<0·05). Compared with C in the liver, REP prevented lipid accumulation (total lipid, TAG and total cholesterol, P<0·01). Liver metabolome analysis indicated that levels of metabolites associated with glycolysis, the pentose phosphate pathway and carnitine metabolism were significantly greater in the REP group than in the C group (P<0·05), suggesting activation of both glucose catabolism and fatty acid oxidation. The metabolite increases promoted by REP may contribute to suppression of liver lipid accumulation. Urinary excretion of albumin and N-acetyl-ß-d-glucosaminidase was significantly reduced in rats fed REP for 8 weeks (P<0·01). In addition, there was a distinct suppression of mesangial matrix expansion and glomerular hypertrophy in response to REP (P<0·01). Thus, REP had preventive effects on obese diabetes, fatty liver and diabetic nephropathy.